IP Library › Granted Patent US 12,399,227
Granted Patent B2
US 12,399,227 · App. 17/677,627 · Granted Aug 26, 2025

Acoustic wave-based battery management

Inventors: Bogdan I. Epureanu (Ann Arbor, MI); Ganghyeok Im (Ann Arbor, MI); Wei Lu (Northville, MI); Bogdan Ioan Popa (Ann Arbor, MI)
Assignee: The Regents of the University of Michigan
G01R31/392G01N29/02G01R31/385
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Quick Facts
Patent No.
US 12,399,227
App. No.
17/677,627
Granted
Aug 26, 2025
Kind
B2
Abstract

A battery cell in which a liquid electrolyte is disposed and an acoustic transducer in mechanical communication with the battery cell. The acoustic transducer is configured to generate acoustic waves. The acoustic waves have a wavelength larger than a dimension of the battery cell such that the acoustic waves generate cavitation bubbles in the electrolyte.

Claims (32)

1. A system comprising:

a battery cell in which a liquid electrolyte is disposed; and

an acoustic transducer in mechanical communication with the battery cell, the acoustic transducer being configured to generate acoustic waves during a charging or non-charging state of the battery cell;

wherein the acoustic waves have a wavelength larger than a dimension of the battery cell such that the acoustic waves generate cavitation bubbles in the electrolyte.

2. The system of claim 1 , wherein the acoustic waves comprise ultrasonic waves.

3. The system of claim 1 , wherein the acoustic transducer generates acoustic waves at a predetermined frequency between 20 kHz and 10 MHz.

4. The system of claim 1 , wherein the acoustic transducer is positioned relative to the battery cell such that the acoustic waves are bulk acoustic waves.

5. The system of claim 1 , wherein:

the battery cell comprises an electrode; and

the acoustic transducer is positioned such that microjets arising from the cavitation bubbles are directed toward the electrode.

6. The system of claim 1 , further comprising a battery pack, wherein:

the battery cell is one of a plurality of battery cells of the battery pack; and

the battery pack is pre-stressed such that the acoustic waves propagate throughout the plurality of battery cells.

7. The system of claim 1 , wherein the battery cell is configured as a lithium-ion battery.

8. The system of claim 1 , wherein the battery cell comprises a prismatic pouch cell, the prismatic pouch cell comprising a plurality of layers, each layer of the plurality of layers including an anode, a cathode spaced apart from the anode, an electrolyte disposed between the anode and the cathode, and a separator disposed within the electrolyte between the anode and the cathode.

9. The system of claim 8 , wherein the plurality of layers is disposed within the prismatic pouch cell in a jelly roll configuration.

10. The system of claim 1 , wherein the acoustic transducer comprises a piezoelectric transducer.

11. A method of managing a battery, the battery comprising a cell that includes an electrode and a liquid electrolyte disposed within the cell of the battery, the method comprising:

detecting a charging operation of the battery; and

applying, with an acoustic transducer in mechanical communication with the cell of the battery, acoustic waves to the cell of the battery, the acoustic waves being applied during the charging operation of the battery,

wherein the acoustic waves have a wavelength larger than a dimension of the cell of the battery such that the acoustic waves generate cavitation bubbles in the electrolyte disposed within the cell of the battery.

12. The method of claim 11 , wherein a collapse of the cavitation bubbles causes a formation of high speed and high pressure microjets, the microjets being perpendicular to a surface of the electrode.

13. The method of claim 12 , wherein the microjets reduce a thickness of a layer on the surface of the electrode, such that an impedance of the battery is reduced allowing for fast charging of the battery.

14. The method of claim 13 , wherein the reduction of the thickness of the layer on the surface of the electrode minimizes a degradation effect of the battery.

15. The method of claim 14 , wherein the degradation effect comprises dendrite formation.

16. The method of claim 12 , wherein the microjets enhance the transport of materials inside the electrolyte, such that an impedance of the battery is reduced allowing for fast charging of the battery.

17. A system for reducing an impedance of a battery cell during a charging state of the battery cell, the battery cell comprising an electrode and a liquid electrolyte disposed within the battery cell, the system comprising:

a battery pack, wherein the battery cell is one of a plurality of battery cells of the battery pack; and

an acoustic transducer in mechanical communication with the battery pack, the acoustic transducer being configured to generate, during the charging state of the battery cell, bulk acoustic waves that propagate throughout the plurality of battery cells, wherein the bulk acoustic waves generate cavitation bubbles in the liquid electrolyte disposed within the battery cell,

wherein a collapse of the cavitation bubbles produces high speed and high pressure microjets perpendicular to a formation on a surface of the electrode, such that a size of the formation is reduced by the microjets contacting the formation.

18. The system of claim 17 , wherein a frequency range of the bulk acoustic waves is predetermined, such that an effect of the microjets on the formation of the surface of the electrode is maximized and damage to the battery cell, the battery pack, the electrode, or combinations thereof, is minimized.

19. The system of claim 18 , wherein sizes of the cavitation bubbles are based on the frequency range of the bulk acoustic waves.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 28, 2025
From: EPUREANU, BOGDAN I.; IM, GANGHYEOK; LU, WEI; POPA, BOGDAN IOAN
To: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Reel/Frame 070964/0811 →
Continuity (2)
Provisional Application 63152027 · Feb 22, 2021
Related Publication 20220268851A1 · Aug 25, 2022
References Cited (54)
CN 109817987A · 2019 [cited by examiner]
TW 201728505A · 2017 [cited by examiner]
English machine translation of CN 109817987 A (Year: 2019). [cited by examiner]
English machine translation of TW 201728505 A (Year: 2017). [cited by examiner]
Agostini, M. et al.; A high-power and fast charging Li-ion battery with outstanding cycle-life; Sci. Rep. vol. 7, 2017; pp. 1-7. [cited by applicant]
Agubra, V. A. et al; Analysis of effects of the state of charge on the formation and growth of the deposit layer on graphite electrode of pouch type lithium ion polymer batteries; J. Power Sources vol. 270, 2014; pp. 21… [cited by applicant]
An, S. J. et al.; The state of understanding of the lithium-ion-battery graphite solid electrolyte interphase (SEI) and its relationship to formation cycling; Carbon vol. 105, 2016; pp. 52-76. [cited by applicant]
Andre, D. et al.; Characterization of high-power lithium-ion batteries by electrochemical impedance spectroscopy. I. Experimental investigation; J. Power Sources vol. 196, 2011; pp. 5334-5341. [cited by applicant]
Arora, P. et al.; Capacity Fade Mechanisms and Side Reactions in Lithium-Ion Batteries; J. Electrochem. Soc. vol. 145, 1998; pp. 3647-3667. [cited by applicant]
Aurbach, D.; Review of selected electrode-solution interactions which determine the performance of Li and Li ion batteries; J. Power Sources vol. 89, 2000; pp. 206-218. [cited by applicant]
Birkl CR et al., Degradation diagnostics for lithium ion cells, Journal of Power Sources, vol. 341, Feb. 15, 2017, pp. 373-386. [cited by applicant]
Brotchie, A. et al.; Effect of power and frequency on bubble-size distributions in acoustic cavitation; Phys. Rev. Lett. vol. 102, 2009; pp. 1-4. [cited by applicant]
Chahine, G. L. et al.; Modeling of surface cleaning by cavitation bubble dynamics and collapse; Ultrason. Sonochem. vol. 29, 2016; pp. 528-549. [cited by applicant]
Christensen, J. et al.; Effect of Anode Film Resistance on the Charge/Discharge Capacity of a Lithium-Ion Battery; J. Electrochem. Soc. vol. 150, 2003; pp. A1416-A1420. [cited by applicant]
Compton, R. G. et al.; Dual activation: Coupling ultrasound to electrochemistry—An overview; Electrochim. Acta vol. 42, 1997; pp. 2919-2927. [cited by applicant]
Crum, L. A. et al.; Acoustic cavitation generated by microsecond pulses of ultrasound; Nature vol. 319, 1986; pp. 52-54. [cited by applicant]
Ding, F. et al.; Effects of ultrasound on lithium metal rechargeable battery characteristics at high charging rate; Electrochem. commun. vol. 7, 2005; pp. 552-556. [cited by applicant]
Dornbusch, D. A. et al.; Effects of sonication on eis results for zinc alkaline batteries; ECS Electrochem. Lett. vol. 2, 2013; pp. A89-A92. [cited by applicant]
Edström, K. et al.; A new look at the solid electrolyte interphase on graphite anodes in Li-ion batteries; J. Power Sources vol. 153, 2006; pp. 380-384. [cited by applicant]
Goodenough, J. B. et al.; Challenges for rechargeable batteries; J. Power Sources vol. 196, 2011; pp. 6688-6694. [cited by applicant]
Han, X. et al.; A review on the key issues of the lithium ion battery degradation among the whole life cycle; eTransportation vol. 1, 2019; pp. 1-21. [cited by applicant]
Hilton, R. et al.; Ultrasonic enhancement of battery diffusion; Ultrason. Sonochem. vol. 21, 2014; pp. 901-907. [cited by applicant]
Huang An et al.; Enabling Rapid Charging Lithium Metal Batteries via Surface Acoustic Wave-Driven Electrolyte Flow; Adv. Mater. vol. 32, 2020; pp. 1-7. [cited by applicant]
Huang, Q. A. et al.; Impedance Characteristics and Diagnoses of Automotive Lithium-Ion Batteries at 7.5% to 93.0% State of Charge; Electrochim. Acta vol. 219, 2016; pp. 1-53. [cited by applicant]
J. Vetter et al., Ageing mechanisms in lithium-ion batteries, Journal of Power Sources, vol. 147, Issues 1-2, Sep. 9, 2005, pp. 269-281. [cited by applicant]
Jamshidi, R.; Modeling and Numerical Investigation of Acoustic Cavitation with Applications in Sonochemistry; Dissertation—Doctoral Thesis; Universitätsbibliothek Clausthal; 2013; pp. 1-159. [cited by applicant]
Jespersen, J. L. et al.; Capacity Measurements of Li-Ion Batteries using AC Impedance Spectroscopy; World Electric Vehicle Journal vol. 3; 2009, pp. 127-133. [cited by applicant]
Jossen, A.; Fundamentals of battery dynamics; J. Power Sources vol. 154, 2006; pp. 530-538. [cited by applicant]
Koltypin, M. et al.; The study of lithium insertion-deinsertion processes into composite graphite electrodes by in situ atomic force microscopy (AFM); Electrochem. commun. vol. 4, 2002; pp. 17-23. [cited by applicant]
Lauterborn, W. et al.; Experimental investigations of cavitation-bubble collapse in the neighbourhood of a solid boundary; J. Fluid Mech. vol. 72, 1975; pp. 391-399. [cited by applicant]
Lee, J. et al.; Determination of the size distribution of sonoluminescence bubbles in a pulsed acoustic field; J. Am. Chem. Soc. vol. 127, 2005; pp. 16810-16811. [cited by applicant]
Legay, M. et al.; Enhancement of heat transfer by ultrasound: Review and recent advances; Int. J. Chem. Eng. vol. 2011, 2011; pp. 1-17. [cited by applicant]
Li, S. E. et al.; An electrochemistry-based impedance model for lithium-ion batteries; J. Power Sources vol. 258, 2014; pp. 9-18. [cited by applicant]
Lu, P. et al.; Chemistry, impedance, and morphology evolution in solid electrolyte interphase films during formation in lithium ion batteries; J. Phys. Chem. C vol. 118, 2014; pp. 896-903. [cited by applicant]
Mizushima, K. et al.; LixCoO2 (0x• 1): A new cathode material for batteries of high energy density; Solid State Ionics vol. 3-4, 1981; pp. 171-174. [cited by applicant]
Momma, T. et al.; Ac impedance analysis of lithium ion battery under temperature control. J. Power Sources vol. 216, 2012; pp. 304-307. [cited by applicant]
Ning, G. et al.; Cycle Life Modeling of Lithium-Ion Batteries; J. Electrochem. Soc. vol. 151, 2004; pp. A1584-A1591. [cited by applicant]
Plesset, M. S. et al.; Collapse of an initially spherical vapour cavity in the neighbourhood of a solid boundary; J. Fluid Mech. vol. 47,1971; pp. 283-290. [cited by applicant]
Reichert, M. et al.; Influence of relaxation time on the lifetime of commercial lithium-ion cells; J. Power Sources vol. 239, 2013; pp. 45-53. [cited by applicant]
Rieger, B. et al.; Multi-scale investigation of thickness changes in a commercial pouch type lithium-ion battery; J. Energy Storage vol. 6, 2016; pp. 213-221. [cited by applicant]
Suresh, P. et al.; Temperature dependence studies of a.c. impedance of lithium-ion cells; J. Appl. Electrochem. vol. 32, 2002; pp. 267-273. [cited by applicant]
Tarascon, J. M. et al.; Issues and challenges facing rechargeable lithium batteries; Nature; vol. 414, 2001; pp. 359-367. [cited by applicant]
Thomas, M. G. S. R. et al.; AC Impedance Analysis of Polycrystalline Insertion Electrodes: Application to Li1—x CoO2; J. Electrochem. Soc. vol. 132, 1985; pp. 1521-1528. [cited by applicant]
Tsang, K. M. et al.; Identification and modelling of Lithium ion battery; Energy Convers. Manag. vol. 51, 2010; pp. 2857-2862. [cited by applicant]
University of California—San Diego; “Ultrasound device improves charge time and run time in lithium batteries: The device brings lithium metal batteries one step closer to commercial viability.” ScienceDaily; Feb. 18, 2… [cited by applicant]
Verma, P. et al.; A review of the features and analyses of the solid electrolyte interphase in Li-ion batteries; Electrochim. Acta vol. 55, 2010; pp. 6332-6341. [cited by applicant]
W. Lauterborn et al.; Experimental and theoretical bubble dynamics; Adv. Chem. Phys. vol. 110, 1999; pp. 295-380. [cited by applicant]
Xu, K.; Electrolytes and interphases in Li-ion batteries and beyond; Chem. Rev. vol. 114, 2014; pp. 11503-11618. [cited by applicant]
Yasui, K.; Influence of ultrasonic frequency on multibubble sonoluminescence; J. Acoust. Soc. Am. vol. 112, 2002; pp. 1405-1413. [cited by applicant]
Yoshino, A.; Chapter 1: Development of the Lithium-Ion Battery and Recent Technological Trends; Lithium-Ion Batteries: Advances and Applications; Elsevier Science and Technology Books; 2014; pp. 1-20. [cited by applicant]
Zhang, S. S.; The effect of the charging protocol on the cycle life of a Li-ion battery; J. Power Sources vol. 161, 2006; pp. 1385-1391. [cited by applicant]
Zheng, J. et al. Electrolyte additive enabled fast charging and stable cycling lithium metal batteries; Nat. Energy vol. 2, 2017; pp. 1-8. [cited by applicant]
Zhu, G. L. et al.; Fast Charging Lithium Batteries: Recent Progress and Future Prospects; Small vol. 15, 2019; pp. 1-14. [cited by applicant]
Zubi, G. et al.; The lithium-ion battery: State of the art and future perspectives; Renew. Sustain. Energy Rev. vol. 89, 2018; pp. 292-308. [cited by applicant]